Swab



Nov. 17, 1925.

B. P. HOFFMAN ET AL A swAB Filed Nov. 19. 1925 Patented Nov. 17, 1925.

UNITED STATES PATENT OFFICE.

BEN P. HOFFMAN .ANDY WALTER Gr. BISBEE, OF BRISTOW, OKLAHOMA,

swAn.

Application filed November 19, 1923; Serial N'o. 675,774.

To all whom t may concern.'

Be it known that we, BEN l). HOFFMAN and WALTER G. BrsEE, citizens of the United States, residing at Bristow, in the county of Creek and State of Oklahoma, have invented anew and useful Swab, of which the following is a specification.

One object of this invention is to construct a device of the class described'involvl0 ing a swivel connection, one of the elementsv of the swivel also acting as a valve for the admission of the fluid.

Another object of the invention resides in the provision of a valve, the opening and closing of which is regulated by a coiled spring, the tension of the latter being kadjustable by means of suitably arranged threaded nut members.

Another object resides in the particular construction and arrangement of the packing element, the purpose of which is not only to permit adjustment, but also to eliminate the injury of same and resultant blocking of the passage on withdrawing from the well.

Other features `of constructionand novel arrangement of parts whereby agitation of the bottom of the well, the creation of apartial vacuum on the sand with a hole full of fluid and the automatic release of the excess amount of fluid, will more clearly hereinafter appear by reference to, the 'accompanying drawings and specification, wherein like numerals of reference designate corresponding parts throughout the several views, in which Fig. 1 is a side elevation showing the present invention assembled,

Fig. 2 is an enlarged vertical sectional View of the packer, and

Fig. 3 is a similar view of Fig. 1.

Referring now to the various details of construction, reference numeral 1 indicates a portion vof tubing threaded at its upper and lower ends 2 and 3.- A packer is ar ranged for movementy on this tube 1 and includes the upper and lower guide blocks 4 and 5 and the intermediate cylindrical rub# ber packing element 6, the latter having upper and lower tapered edges forming seat portions of conical cross-section which are fixed in similar recesses in the blocks 4 and 5 heretofore mentioned. The guide blocks 4t and 5 having central openings 7 and 8 respectively of suitable diameter to permit free longitudinal movement with respect to the tube 1, vitbeing obvious that the central opening 8 in the lower block V5 is ,of greater diameter than the opening in the upper block 4L dueto thenecessity of permitting 60 the passage of the nipple 9. The nipple 9 includes the elongated exteriorly threaded portion and the enlarged thimble portion 10 formed with the annular recess for the reception of the spring 11. A nut 12 is pro-Y 66 vided andformed with threads for engage ment lwith the threads ofthe elongated threaded nipple portion. This nut engages the lower face of the lower' block 5 of the packer structure and when moved acts to adjust the cylindrical rubber packing element 6. The entire nipple structure and the packer are both free to move on the'tube 1 under the tension of the spring 11 which,

heretofore stated, seats in the cylindrical socket portion of the nipple thimble 10. A similar socket member lreceives the lower end of the spring and is engaged and adjusted by means'of 'the nut 1.5, the latter traveling on the lower threaded portion of the tube 1.

Obviously from the foregoing, the ad justment of the spring tension by movement of thenut 15 on the threaded tube will rcsult in a tendency on the part of the packer and co-related parts to move upwardly and this upward movement is limited by engagement of the conical valve portions 16 and 17. The inner valve portion 16 comprises intermediate inverted truncated cone portions 18, the lower internally threaded portion 19 and the upper exteriorly threaded reduced portion 20, the intermediate portion being formed with openings 16. The threads of n the portionA 19 engage the exterior' threads 95 von the upper portion of the tube 1 and the upper exterior' threads on the reduced portion 2O engageV interior threads formed in thelower portion of the casing 21. The outer valve member 17l isshaped toi corre- 100 per face ot the head oi' the pin.

spend to thev intermed'ate und lower portions of the inner valve men'ibei` 16 and is to med in the present instance by an integral extension oi the upper block member 4C. Obviously, this outer valve member i7 may be made an independent element and when so made, will be suitably attached to the upper block.

By the construction and arrangement above outlined it will be readily seen by one skilled in the art that the tension of the spring will regulate the seating tendency oit valve 17.

For connecting the casing 2l to the stein, a pin 22 is threaded into the connecting member ,3. This pin 22' is termed with an enlarged head1 having a regular rounded upper tace 24 to act as a valve face and likewise act as the head of a. swivel. The casing` 2l is flanged inwardly at its upper end at 25 anda central passage 26 is formed therein, the inner lower edge of which is curved to conform to the contour ci the uprlliis opening 2G, may by the arrangement indicated, be closed by engagement clit-he headed pertion with the curved tace, and likewise, due to the construction et these elements, a swivel action is present which provided for movement of the parts when necessary because of the twisting oi the cable or the like. Toylimit the downward niovei'nent otl the valvelor swivel member, a pin 27 is lifted transversely of the casing 2l at a point such as will permit the necessary movement el? the parts for satisfactory operation.

Referring more particularly to tue operation of the various elements comprising the present invention, attention is V.firent directed to the fact that the rubber packer is adjustable by movement oi the nut l2 and the tensionv ot the spring, and ccnsequently the seatingtendency of the valve iti-l? is r lated by movement of thenut l5. Accel ingly, before utilization, the proper adjustment ot the parts are made by n'iovement oli' these nuts l2 and l5 andy the arrangement can then be lowered inte the casing :lor the desired operation. During movenze it inte and out ol the casing, any i or similar movement will be acconunodated by means oli the 'upper swivel member which likewise the upper valve. This upper valve is opened by lowering the stein atterthe packer becen'ies stationary and is closed by an upward movement ol such stem.

Dur-ing the withdrawal ol the apparatus, the conical valve will automatically open against the tensionoli the spring at the Vpoint predetermined by the adjustment ot the spring through movement otthe nut 4l5 heretoforeI mentioned.

The various functions procured by the present' structure will bey clear to one familiai' with the art, and it will be obvious that numerous changes in details of, construction and arrangement ot parts can be made without departing from the spirit oit the invention.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent is l. ln a device of the class described, a tubular member having upper and lower threaded portions, a packing element arranged for movement on the tubular meinber, means tor` expanding said packer, a valve casing iXed to said tubular member and a valve carried by said packer.

2. ln a devicel of the class described, a tubular member, a packer arranged lior movement on saidtubular member, a series of ports arranged to permit exterior coinmunication from within. said tubular meinber, and means for closingY said portscarried by said packer.

3. In a device of the class described, a tubular member formed with an, upper threaded extremity, aconical tubular member formed with threadsl for engagement with the threads of the tubular member, and having a series of perforatons formedthere in, a packer arranged to travel on said: tubular member, means lor closing the ports in said conical member, and a spring for operating the port closing means. y j

Al. ln a device of the class described, a perforated conduit, an adjustable packer carried by said conduit, a cap` for the upper end ot' said conduit formed with al central opening, and a supportingelement for said conduit including a valve`V for said central opening.

5. In a devicel ot the class described, a tubular conduit, an adjustable packer car ried by said conduits, series of ports in the walls oi' said' conduit, e closure lor said ports, a cap tor said conduit 'termedy with a central opening and a valve for said central opening fgrmed Iwith a supporting shank `t'or said conduit. f

(i. In a device el? the class described, a tubular conduit lorn'ied with lateraliports, a packer arranged for movement onf said Vconduit, a valfvefor said ports carried by said packer, means forr retaining said.` valve in closed position, a ca) tor said' conduit Alormed with a central opening, a valvefor said opening and a supporting shank extending 'lfroni said valve. f

7. In a devicel ot the class described, a tubularconduit formed with lateral' ports, a packer arranged for movement on said conduit, a valve for said ports carried by said packer, means for retaining saidl valve in closed position, a cap for said conduit formed with a central opening, andA means for closing saidopening; including a swivel ball formed with a tlneaded shank' portion. formed with a central opening, a vaglvefor 8e In a device of the class described, a, Said opening including a lmll' vnaming an tubular conduit formed with lateral ports, elongated Shank portion, Said ball bel'lg 10 a packer arranged for movement onfsaid adapted for swivel movement Within said conduit, a valve for said ports carried by cap. said packer, means for retaining the valve BEN P. HOFFMAN. in closed position, :L cap for said conduit VALTER G. BISBEE. 

